Hello all,

Recently bought some used 996 Carrera brake calipers. Intended on rebuilding a set and then putting them onto my 996TT this summer.

Two of the calipers had some issue being disconnected from the brake lines (see photos below). The other two seem fine. One of the nuts looks to be ground a fair bit down already. Any recommendations on how to get these nuts loose? I have already hit it with PB blaster for 24 hours several times. Nuts don't seem to budge with my flared wrenches. Heat?

Any suggestions appreciated. Thanks.

 

if your not trying to save the hoses, cut the hose off and drive a easy out into the hole of the fitting and remove.

 

Well, if it were me,,, I'd clean the fitting up with some brake clean and compressed air, then hit it with wd allowing the penetrant to fully flow in.

Couple ways to do this. First mount the caliper carefully snug in soft jaw vise, then if the brake line is rounded out enough where the flare nut wrench slips, its then time for a nice new large vise grips clamped down hard... Heat would be my last resort unless prior tech foolishly used sealant on the fitting.

As said above, easy out should work, if needed...

jmo

 

Vice grips on the nut since there is nothing left and heat. Get a small butane kitchen torch. The flame is much more controlable then a larger map torch. It will take longer for the heat to get into the fitting but the paint on the caliper will survive better.

 

As counter intuitive as it sounds, try tightening it a bit, then loosen, then tighten, repeat. TINY steps. Be patient and keep putting penetrating oil to it. Heat is good too. Amazing what the tighten/loosen technique will do though.

 

I hope you can get it out using all the above mentioned methods and not have to go through the PITA process I did. I had something similar happen last year when working on a friends car. Despite doing all of the above the I was able to get the nut to budge but it just ate the threads. They were badly corroded. I was able to repair it by cutting the line and essentially drilling it out. I ended up installing a helicoil to get new threads in there and the car has been fine ever since. It's super crucial to be very careful when drilling it out, if you get to that point. You do not want to go to deep with the drill bit as you will compromise the mating surface to which the flared line attaches once tightened again. Good luck!

 

I would go with an external nut extractor of the correct size. That fitting is shot regardless - you’ll need a new one - don’t worry about tearing it up…